REAL-TIME BEAMFORMING AND DIRECTION VECTOR ESTIMATION METHOD BASED ON TARGET MASK AND INDEPENDENT COMPONENT ANALYSIS FOR ROBUST VOICE RECOGNITION - SOGANG UNIV RESEARCH ＆ BUSINESS DEVELOPMENT FOUNDATION

Title:

REAL-TIME BEAMFORMING AND DIRECTION VECTOR ESTIMATION METHOD BASED ON TARGET MASK AND INDEPENDENT COMPONENT ANALYSIS FOR ROBUST VOICE RECOGNITION

Document Type and Number:

WIPO Patent Application WO/2024/014797

Kind Code:

A1

Abstract:

A beamforming and direction vector estimation system according to an embodiment of the present invention may comprise an input provision unit, a demixing provision unit, and a result provision unit. The input provision unit can provide an input signal of microphones on the basis of a space transfer function corresponding to a target signal and a noise signal at a target point. The demixing provision unit can provide a demixing matrix determined according to the input signal of the microphones and to an independent component analysis (ICA) having a space constraint condition. The result provision unit can extract a result signal from the input signal of the microphones on the basis of the demixing matrix. In the beamforming and direction vector estimation system, according to the present invention, a demixing matrix is calculated using a cost function including a plurality of limiting conditions, and thus a target signal generated from the target point can be steadily extracted without distortion to a desired channel.

Inventors:

PARK HYUNG MIN (KR)
SHIN UI HYEOP (KR)

Application Number:

PCT/KR2023/009726

Publication Date:

January 18, 2024

Filing Date:

July 10, 2023

Export Citation:

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Assignee:

SOGANG UNIV RESEARCH ＆ BUSINESS DEVELOPMENT FOUNDATION (KR)

International Classes:

H04R3/00; G06F17/16; G10L15/20; G10L21/02; G10L21/0216; H04R3/02

Foreign References:

KR20110121955A	2011-11-09
KR20210142268A	2021-11-25
KR20080073936A	2008-08-12
KR101720514B1	2017-04-11

Other References:

JO, JI-WON; PARK, HYEONG-MIN : "Hidden Markov Model Based Feature Enhancement Method for Robust Speech Recognition in Additive Noise or Reverberant Environments", KICS - THE JOURNAL OF THE KOREAN INSTITUTE OF COMMUNICATION SCIENCE, KOREAN INSTITUTE OF COMMUNICATION SCIENCE, KOREA, vol. 33, no. 9, 1 September 2016 (2016-09-01), Korea , pages 17 - 23, XP009552002, ISSN: 1226-4725

Attorney, Agent or Firm:

LEE, Jun Young (KR)

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